Income Taxes Income Tax Expense Detail (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Taxes [Abstract]
Current Federal Tax Expense (Benefit)	$ 30,560	$ 38,148	$ 20,460
Current State and Local Tax Expense (Benefit)	1,152	1,636	2,195
Current Income Tax Expense (Benefit)	31,712	39,784	22,655
Deferred Federal Income Tax Expense (Benefit)	7,192	(5,890)	16,587
Deferred State and Local Income Tax Expense (Benefit)	3,070	140	(1,844)
Deferred Income Tax Expense (Benefit)	10,262	(5,750)	14,743
Income Tax Expense (Benefit)	$ 41,974	$ 34,034	$ 37,398